baber/WOPTO huggingface dataset:
Patent KR-20150018123-A (KR)
IPC: H04N5/44
Filed: 2013-08-09
Abstract: Disclosed is a display device. The display device includes: a display unit which displays a content screen; a bezel unit which is formed on the outermost side of the display unit and includes a plurality of light emitting devices; and a control unit which turns on at least one light emitting device among the light emitting devices based on additional information corresponding to the content screen.
Patent KR-20150020401-A (KR)
IPC: G06Q30/02
Filed: 2013-08-13
Abstract: An advertisement service system, a method thereof, and an apparatus applied to the same are disclosed. That is, the occurrence of wireless traffic on an advertising media device may be minimized by transmitting an advertisement content request received from the advertising media device to two or more advertisement platform devices such that the advertisement content request can be checked by the two or more advertisement platform devices, selecting advertisement content suitable for the advertising media device as advertisement content to be provided, among advertisement content received from the two or more advertisement platform devices that has checked the advertisement content request, and providing the advertising media device with only the advertisement content selected as the advertisement content to be provided. The advertisement service system includes an advertisement supporting device. The advertisement supporting device includes a selecting unit.
Patent KR-20150019544-A (KR)
IPC: A61P29/00
Filed: 2013-08-14
Abstract: The present invention relates to a composition for antioxidation and anti-inflammation, comprising a compound represented by chemical formula 1 as an active ingredient. According to the present invention, acaciin shows antioxidant effect by inhibiting generation of free radicals and shows anti-inflammatory effect by inhibiting generation of NO, thereby being used as a pharmaceutical composition, an external use skin formulation, a cosmetic composition, or a health food.
Patent KR-20150019626-A (KR)
IPC: A61K31/704
Filed: 2013-08-14
Abstract: The present invention relates to a composition for skin regeneration, wrinkle removal, anti-oxidation, anti-inflammation, and skin whitening. The polyphyllin II according to the present invention shows a skin regeneration effect and a wrinkle removal effect by promoting synthesis of collagen of fibroblasts of the skin, an anti-oxidation effect by controlling generation of free radical, an anti-inflammation effect by controlling generation of NO, and a skin whitening effect by controlling synthesis of melanin, thereby being applicable as pharmaceutical compositions, external applications for the skin, cosmetic compositions, or heath foods.
Patent KR-20140027881-A (KR)
Title: Positive electrode for secondary battery, secondary battery, and method for fabricating positive electrode for secondary battery
Inventor: YAMAKAJI MASAKI
IPC: H01M4/58
Filed: 2013-08-22
Abstract: Provided in the present invention are an anode electrode for a secondary battery having an excellent battery properties and a predetermined strength of electrode, a secondary battery, and a method for manufacturing the same. The anode electrode for a secondary battery includes a current collector, a layer of active material provided on top of the current collector. The layer of active material includes an active material, grapheme, and a binder. A carbon layer is prepared on the surface of the active material, and the compounding ratio of the grapheme, on the layer of the active material, is over 0.1% by weight and below 1.0% by weight.
Patent KR-20150024474-A (KR)
Inventor: CHA SUNG CHUL
IPC: C23C14/06
Filed: 2013-08-26
Abstract: The present invention relates to a low friction coating layer and a coating method thereof and, more specifically, to a low friction coating layer including a DLC coating layer excellent in high hardness low friction and a method for easily forming the low friction coating layer for parts of a vehicle. The low friction coating layer comprises: an adhesive layer on a surface of a base material; a steel sheet layer on the surface of the adhesive layer; and a coating layer on the surface of the steel sheet layer, wherein the coating layer is formed of at least one selected among a DLC coating layer, a metal carbide layer, a metal nitride layer, and a metal carbonitride layer.
Patent KR-20150024481-A (KR)
Inventor: JO KI TEAG
IPC: F03D11/00
Filed: 2013-08-26
Abstract: 풍차나 수차에서 기계적인 큰 힘을 얻기 위하여, 넓은 날개 면적으로 힘을 얻고 뒤돌아가는 날개 저항을 줄이기 위하여 날개를 자전시키는 것이다. 
종래 풍차에서, 날개를 고정하여 기계적인 힘을 얻는 방법은 크기에 비해 힘이 적고, 설치 비용이 많고, 수리가 힘들고, 설치 장소 제한이 많았다. 
본 발명은 넓은 날개의 양쪽을 회전축으로 붙들고, 날개 위치에 따라 날개가 받은 힘의 방향을 이용하여, 자전 중심을 이동시켜 날개 1회전에 날개 자체는 반 회전 자전하거나, 자전 중심을 고정하여 1회전에 1회전 자전하는 것이다.  
강풍에 파손을 줄이기 위하여 날개를 복수 층으로 배치할 수 있고, 얻는 힘의 설정 한계치를 넘거나 정지가 필요할 시 날개의 자전 제한을 해제하여 날개를 좁은 면적으로 대항시켜 저항을 줄여 정시시킨다. 
유체에서 큰 힘을 얻기 위하여 날개 면적을 크게 하고, 뒤돌아가는 날개의 저항을 줄이기 위하여 좁은 면적으로 대항하게 날개를 자전하는 것을 특징으로 하는 날개가 자전하는 수차와 풍차이다.
Patent KR-20140051771-A (KR)
Title: Terminal and method for controlling touch operation in the terminal
Inventor: PARK JU YOUNG
IPC: G06F3/01
Filed: 2013-09-24
Abstract: According to an embodiment of the present invention, a terminal is provided. The terminal includes: a gaze tracking unit which tracks a user′s eyes and generates a gaze information; a touch detection unit which detects a user′s touch and generates a touch information; and a controller which performs a touch operation based on the gaze information and touch information.
Patent KR-20150036905-A (KR)
IPC: G06F1/16
Filed: 2013-09-30
Abstract: A docking apparatus for a portable electronic device according to an embodiment of the present invention includes: a locking member movable between a first position, where the portable electronic device docked in the docking apparatus is locked, and a second position, where the portable electronic device is unlocked; a locking member driving unit driving the locking member; and a controller, if an unlocking condition is satisfied in a state that the portable electronic device is docked in the docking apparatus, controlling the locking member driving unit to move the locking member from the first position to the second position, and then maintaining the locking member at the second position for at least a set time.
Patent KR-20150037085-A (KR)
IPC: H01M10/052
Filed: 2013-09-30
Abstract: The present invention relates to a cathode active material for a lithium secondary battery and the lithium secondary battery including the same, and more particularly, to the cathode active material for the lithium secondary battery, comprising a mixture of lithium-rich transition metal oxides represented by chemical formula 1 and lithium-composite transition metal oxides represented by chemical formula 2: Li(1+a)Ni_bMn_cCo_(1-[a+b+c+d])M_dO_(2-s)A_s (1); LiNi_xMn_yCo_(1-[x+y+z])M′_zO_(2-t)A′_t (2). In the formulas, 0.1<=a<=0.2, 0.1<=b<=0.4, 0.3<=c<=0.7, 0<=d<=0.1, 0.5<=x<=0.8, 0.1<=y<=0.4, 0<=z<=0.1, 0<=s<0.2, 0<=t<0.2; M and M′ are independently one or more of divalent or trivalent metals; and A and A′ are independently one or more of monovalent or divalent anions.
Patent KR-20140052833-A (KR)
Title: Polycarbonate resin composition
Inventor: LEE RYUL
IPC: C08K5/521
Filed: 2013-10-04
Abstract: The present invention relates to a polycarbonate resin composition which has low warpage properties, has an excellent fluidity and appearance characteristics, and has enhanced toughness. The polycarbonate resin composition includes: 35 to 60 weight% of a polycarbonate resin; 30 to 55 weight% of glass fiber which has a rectangular or oval cross-section in the direction perpendicular to the longitudinal direction and the aspect ratio of chemical formula 1 is 50 to 200; 1 to weight% of an impact modifier of a core-shell structure; and 1 to 10 weight% of ethylene-(meth) acrylate copolymer; and 1 to 10 weight% of a flow modifier including a thermoplastic polyester-based polymer or a phosphoric acid ester compound.
Patent KR-20150042938-A (KR)
IPC: H02K15/04
Filed: 2013-10-14
Abstract: The present invention relates to a resolver of a rotating machine, comprising: an insulation cover covering a stator to be insulated; a terminal coupling unit installed in a side of the insulation cover; a terminal unit detachably coupled to a side of the terminal coupling unit; and a retainer detachably coupled to a side of the terminal coupling unit, fastening the terminal unit to be supported. The insulation cover and the terminal unit may simply and securely be coupled, and tension of a coil is relieved to prevent disconnection.
Patent KR-20150049581-A (KR)
Inventor: LEE MOO HUN
IPC: G06F17/30
Filed: 2013-10-30
Abstract: The present invention relates to a method for mapping keywords based on similarity in a semantic search. The method comprises the steps of: performing first word mapping for searching a knowledge base entity mapped in a search keyword from a knowledge base; searching a word similar to a mapping-failed word according to a result of the mapping; and performing second word mapping with the searched similar word.
Patent KR-20150050903-A (KR)
Title: Heat treatment appapratus for annealing
Inventor: LEE SANG WON
IPC: C21D9/54
Filed: 2013-11-01
Abstract: The present invention relates to a heat treatment apparatus for annealing, comprising: a coil; an inner cover including the coil inside to be sealed; a gas supply pipe to supply shielding gas into the inner cover; and a gas injection part which has an inlet connected to the gas supply pipe and an outlet formed in the outer side of the outer sphere of the coil in the radial direction of the coil. The heat treatment apparatus for annealing reduces the temperature variation of the coil by cooling the outer sphere of the coil, which is overheated when compared with the inner sphere of the coil using the supplied shielding gas.
Patent KR-20150051730-A (KR)
Inventor: PARK SEONG SOO
IPC: F03B13/06
Filed: 2013-11-05
Abstract: The present invention relates to cross orbit-circulation frame of double orbit rail array using hydro and gravity and double-sided permanent magnetic linear synchronous generator. The present invention relates to a method for generating moving force in a common flow of water and comprises a large-vehicle track rail, an underwater track frame where a magnetic track rail is arranged, a high track frame, an on-water track frame, a low track frame of large-vehicle track frame, a buoyancy room, and a winding room. A large vehicle, which is joined to each water vehicle to which a winding moving is attached, is attached to a large vehicle track rail of a large vehicle track frame. A permanent magnetic-linear synchronous generator is attached to the upper and lower magnetic track rail of an on-water track frame. A large vehicle moves upwards from the underwater track frame track frame to the upper end of the high track frame by hydraulic power and moves downwards from the on-water track frame to the low track frame by gravity. The kinetic energy generated by the continuous movement is interlinked consistently with the permanent magnetic linear synchronous generator attached to the on-water track frame and the winding mover attached to each water vehicle of the large vehicle and converted into electric energy that generates electromotive force provided to the winding mover and applied to rover water, sea current, sea water and their likes. The present invention relates to an environmentally-friendly apparatus that eliminates the need for additional structure for power generation, is used on a water surface, thus does not need a generation site, is affordable due to the high availability factor, and can move in the event of natural disasters, thus providing a safe apparatus.
Patent KR-20150057212-A (KR)
Inventor: KIM MIN JEONG
IPC: G06Q40/02
Filed: 2013-11-18
Abstract: The present invention relates to an apparatus for generating item information using an operation instruction preamble. The apparatus comprises: a communications interface unit to receive an operation instruction preamble of an electronic preamble type from a depository agency server through a communications network of a computer to computer facilities (CCF) method; a database unit to store generated item information; an item information determination unit to determine whether item information corresponding to the operation instruction preamble exists in the database unit; and an item information generation unit to newly generate item information by analyzing the operation instruction preamble according to a determination result of the item information determination unit.
Patent KR-20150061703-A (KR)
Inventor: LEE HYE YEON
IPC: E01C23/10
Filed: 2013-11-27
Abstract: Presented is a pavement repairing method including a manufacture step of manufacturing a mortar composition and an epoxy resin composition; a road-surface clearance step of clearing a portion (20) to be repaired of an asphalt concrete or concrete pavement (10) and the surroundings thereof; a mortar composition placing and curing step of placing and curing the mortar composition on the portion (20) to be repaired of the cleaned pavement (10); and an epoxy resin composition coating and hardening step of coating and curing the epoxy resin composition on the top of the cured mortar composition. The present invention is capable of rapidly repairing the reinforced portion of the asphalt concrete or concrete pavement, improving anti-slip performance, obtaining work efficiency even in case of rain, obtaining improved durability, weather resistance, and wear resistance, and improving contraction-crack resistance, freeze-thaw resistance, and field applicability.
Patent KR-20150061512-A (KR)
Inventor: LEE HYUK HUI
IPC: B65D45/02
Filed: 2013-11-27
Abstract: The present invention relates to a water bottle cap which comprises: a cap body wherein a bottom surface is opened; a guide hole formed at a constant curvature in an opposite position of the cap body; and a handle rotationally fixated in the cap body. A water bottle cap and a water bottle can be separated or coupled by only rotation of the handle for the water bottle to be easily transferred. A protrusion formed on the handle is simply supported in an inlet of the water bottle for the water bottle to be stably transferred.
Patent KR-20150062047-A (KR)
Inventor: LEE JONG CHAN
IPC: G01R31/28
Filed: 2013-11-28
Abstract: Provided is a switching device failure detection device of an inverter system and a method thereof. The switching device failure detection device of an inverter system is a device which detects the failure of a switching device in an inverter system including an initial charge unit for the inrush current prevention. The switching device failure detection device of an inverter system comprises; a direct current link voltage detection unit which detects voltage of a direct current link capacitor charged by the initial charge unit in real time; a pulse width modulation signal applying unit which applies a pulse width modulation signal which makes phase-to-phase voltage outputted from an inverter to be 0V to the switching device forming the inverter if a ratio of voltage of the direct current link capacitor and rated voltage of the direct current link capacitor satisfies a predetermined standard ratio; a detection unit which detects a failure of the switching device based on the connection unit voltage of the upper and lower switching devices forming the inverter. Therefore, a failure of the switching device can be detected with software without the separate addition of the hardware. Moreover, the expansion of damage to the other switching device and harmful effects to a motor and system power source to which the inverter is connected are prevented beforehand.
Patent KR-20150068025-A (KR)
Title: 강황 또는 울금을 포함하는 인스턴트커피 및 그 제조방법
Inventor: YUN SUNG HAN
IPC: A23F5/24
Filed: 2013-12-11
Abstract: 본 발명은 강황 또는 울금을 포함하는 인스턴트커피 및 그 제조방법에 관한 것으로서, 보다 상세하게는 인스턴트커피 100중량부에 대하여 강황 또는 울금 분말 1∼20중량부를 포함하는 강황 또는 울금을 포함하는 인스턴트커피 및 그 제조방법에 관한 것이다. 
본 발명의 강황 또는 울금을 포함하는 인스턴트커피는 종래의 인스턴트커피와 대비 시 동등 수준 이상의 관능성을 지닐 뿐만 아니라, 인체에 유익한 영양성분을 다량 함유한 강황 또는 울금을 포함하고 있는 건강증진 커피로서의 기능성을 지녀, 관능성 및 기능성이 우수한 인스턴트커피를 제공할 수 있다. 본 발명의 강황 또는 울금을 포함하는 인스턴트커피는 강황 특유의 쓴맛은 감소되고 커피 맛이 담백해져 대중화할 수 있으며, 기호식품인 커피를 마시면서 인체의 건강을 증진할 수 있는 효과가 있다. 
또한 본 발명은 강황 또는 울금의 새로운 소비처로 이용될 수 있어 강황 또는 울금의 주원료인 강황, 울금을 재배하는 농가, 지역사회에 대해 경제적 이익 이외에 강황 또는 울금 관련 산업의 발전에도 기여할 수 있어 산업 상 이용가능성이 있다. 
[색인어] 
강황, 울금, 커피, 인스턴트커피, 분말, 배합
Patent KR-20150069787-A (KR)
Inventor: PI JAE EUN
IPC: G11C19/00
Filed: 2013-12-16
Abstract: In a shift register including a threshold voltage detection part for correcting the threshold voltage of double gate transistors according to an embodiment of the present invention, the threshold voltage detection part includes: a first detection transistor; a detection capacitor for detecting the threshold voltage of the first detection transistor; and a second detection transistor. When the second detection transistor is turned off, a detected correction voltage can be applied to the double gate transistors. According to the present invention, the main transistors of a shift register are formed with a double gate transistor. Thereby, the malfunction of the shift register due to the deterioration of NBIS can be prevented by controlling a threshold voltage. And, the power consumption of a gate driver can be reduced.
Patent KR-20150073288-A (KR)
Inventor: KIM JONG JIN
IPC: G01S7/03
Filed: 2013-12-20
Abstract: Disclosed are a receiver, a method for operating the same, and a beamforming radar system comprising the same. According to an embodiment of the present invention, the receiver using beamforming comprises: a demodulation circuit receiving a signal reflected from an object through an antenna of the receiver, and producing a demodulated signal by demodulating the received signal; and a time delay circuit generating a digital signal containing static delay information associated with the static movement of the object, and dynamic delay information associated with the dynamic movement of the object from the demodulated signal based on reference clock signals.
Patent KR-20150077588-A (KR)
Inventor: KIM TAE HYUNG
IPC: H01L51/50
Filed: 2013-12-27
Abstract: The present invention relates to an organic electroluminescent device comprising: a positive electrode; a negative electrode; a blue fluorescent light emitting layer interposed between the positive electrode and the negative electrode. The blue fluorescent light emitting layer comprises a first host and a second host.
Patent KR-20150077646-A (KR)
Inventor: YOON YOUNG KWON
IPC: H04N5/225
Filed: 2013-12-30
Abstract: According to various embodiments of the present invention, an electronic apparatus includes: an image sensor including at least one phase difference detecting pixel; and a control portion functionally connected to the image sensor. The control portion enables to acquire image information and phase difference information for at least one subject through the image sensor, and to identify a plurality of distance information corresponding to a plurality of areas related to the image information based on the phase difference information. Also, the present invention enables to process the image information based on the distance information. In addition, another embodiment is possible.
Patent KR-20150078232-A (KR)
Inventor: CHOI BONG YOON
IPC: H05K3/34
Filed: 2013-12-30
Abstract: The present invention relates to a method to manufacture a printed circuit board (PCB) and, more specifically, to the development of a method to prevent a short circuit in the progress of surface mount technology (SMT) by equally applying a solder mask to a surface of a final layer. A method to optimize the solder mask screen printing of PCB manufacture includes a screen panel manufacturing step of placing a screen for printing in a frame to manufacture a screen panel; a screen panel setting step of cleaning the screen panel and then setting the screen panel on a printer; a front process step of placing a PCB and progressing with a front process after the setting step; a printing and applying step of printing and applying the PCB after the front process step; a preliminary dry step of preliminarily drying the PCB after the printing and applying step; a light exposing step of exposing the PCB to light after the preliminary dry step; a developing step of developing the PCB after the light exposing step; a final hardening step of hardening the PCB after the developing step; and an application state verification step of verifying an application state and measuring the thickness of ink films by part after the final hardening part. Therefore, the present invention is capable of improving printing quality by improving a stability of an outer appearance by applying equal ink through one time of solder mask application. Moreover, when a component is mounted and solder is applied, unnecessary connection for a circuit or via hole is prevented, and therefore, the reliability and stable operation of a product are improved.
Patent KR-20150078890-A (KR)
Inventor: MOON MIENG JI
IPC: H01H35/00
Filed: 2013-12-31
Abstract: The present invention relates to a smart switch module capable of inputting a switch command with a non-contact method. The smart switch module may include a position detection sensor module; a micro-control unit which receives the position detection signal of an object from the position detection sensor module and outputs a gesture signal; a power supply part which supplies power to the position detection sensor module and the micro-control unit; a first signal transmission medium which connects external power and the power supply part; a second signal transmission medium which connects the position detection sensor module and the micro-control unit; and a third signal transmission medium which connects the micro-control unit and an external device.
Patent KR-20130110142-A (KR)
Inventor: CHAMBERLIN BRADLEY D
IPC: H02K9/19
Filed: 2011-06-08
Abstract: 본 발명의 실시예는 기기 공동을 한정하는 하우징을 포함하는 전기 기기 모듈을 제공한다. 일부 실시예에서, 전기 기기는 기기 공동 내에 위치 설정될 수 있고, 로터 적층체에 커플링되는 로터 허브를 포함할 수 있다. 로터 허브는 제1 축방향 단부 및 제2 축방향 단부를 포함할 수 있고, 로터 적층체는 오목부를 포함할 수 있다. 일부 실시예에서, 오목부는 기기 공동과 유체 연통될수 있는 복수의 냉각제 채널의 일부를 형성하도록 정렬될 수 있다. 일부 실시예에서, 로터 허브는 냉각제 채널의 적어도 일부와 유체 연통되는 제1 로터 허브 유입구 및 제2 로터 허브 유입구를 포함할 수 있다. 제1 로터 허브 유입구 및 제2 로터 허브 유입구는 로터 허브의 축방향 단부에 인접할 수 있다. 일부 실시예에서, 제1 로터 허브 유입구 및 제2 로터 허브 유입구와 유체 연통되는 냉각제 채널은 동일한 냉각제 채널이 아니다.
Patent KR-20130100951-A (KR)
Inventor: TAKASUGI HAJIME
IPC: C08J3/12
Filed: 2011-07-07
Abstract: 본 발명은 저분자량체 미스트를 필터로 제거하는 석유 수지의 제조 방법에 관한 것이다.
Patent KR-20130087494-A (KR)
Inventor: SUZUKI KOTA
IPC: B32B27/00
Filed: 2011-06-10
Abstract: 기판 위에 밀착 보조층이 설치되어 있고, 상기 밀착 보조층 위에 유기 화합물층이 설치되어야 할 밀착 보조층 부착 기판에 있어서, 상기 밀착 보조층에 포함되는 화합물 1 분자 중에는 흡착 관능기와 밀착 촉진 관능기가 포함되고, 상기 흡착 관능기는, 주로 기판에 대하여 결합하는 변성 실란기로 이루어지고, 상기 밀착 촉진 관능기는, 주로 상기 유기 화합물층에 대한 밀착을 촉진해서 향상시킨다.
Patent KR-20140002594-A (KR)
Inventor: SASIKUMAR POTTAYIL GOVINDAN NAIR
IPC: A61K38/17
Filed: 2011-06-27
Abstract: 본 발명은 세포예정사 1 (PD1) 신호전달 경로를 억제할 수 있는 면역억제 화합물을 제공한다. 본 발명은 또한 PD-1, PD-L1 또는 PD-L2에 의한 면역억제 신호전달의 억제에 의해 야기된 면역강화를 통해 감염을 치료하고 암을 치료하기 위한 펩티드계 조성물; 이들을 이용한 치료; 및 활성성분으로서 포함된 면역강화 기질을 제공한다. 또한, 본 발명은 암, 암 전이, 면역결핍증, 감염 질환 등을 위한 예방 및/또는 치료제에 대한 펩티드 부분을 함유하는 조성물의 이용; 이러한 질병에 대한 시험 또는 진단 시약 또는 연구 시약으로서 펩티드 부분의 이용을 제공한다.
Patent KR-20130087015-A (KR)
Inventor: LI PI SHAN COLIN
IPC: C08L53/00
Filed: 2011-06-21
Abstract: 본 발명의 실시양태는 결정질 블록 복합물 및 상용화제로서 그의 용도를 제공한다.
Patent KR-20130139222-A (KR)
Inventor: HARB CHARLES CHARBEL
IPC: G01J3/42
Filed: 2011-08-19
Abstract: 시간 영역 신호를 분석하기 위한 시스템들 및 방법들이 설명된다. 상기 방법은 믹서(150); 시간 감쇠 신호(115)를 국부 발진기(120)에 의해 발생되는, 국부 발진기 신호(122)와 믹싱하며, 푸리에 변환 시간 감쇠 신호가 발생되는 믹싱된 신호를 야기하며, 푸리에 변환된 시간 감쇠 신호는 굽부 발진기 신호(122)에서 기본 변환된  시간 감쇠 신호 및 복수 개의 주파수들에서 복수 개의 변환된 시간 감쇠 신호들을 포함하며, 기본 주파수 및 기본주파수가 아닌 주파수에서 변환된 시간 감쇠 신호들 각각의 크기를 결정한다.
Patent KR-20130041958-A (KR)
Inventor: YAMAUCHI NORIHIRO
IPC: H01L41/253
Filed: 2011-09-28
Abstract: 진동 발전 소자는, 지지부 및 캔틸레버부를 포함하는 베이스 기판과, 캔틸레버부의 진동에 따라 교류 전력을 발생하기 위한 발전부를 포함한다.  발전부는, 캔틸레버부과 중첩되도록 베이스 기판의 일표면 측에 형성된 하부 전극, 캔틸레버부에서 볼 때 하부 전극의 반대 측에 형성된 제1 압전층, 하부 전극에서 볼 때 제1 압전층의 반대 측에 형성된 중간 전극, 제1 압전층에서 볼 때 중간 전극의 반대 측에 형성된 제2 압전층, 및 중간 전극에서 볼 때 제2 압전층의 반대 측에 형성된 상부 전극을 포함한다.